Quantum Criticality Between Metal and Charge Order

• Applicant: Professor Dr. Martin Dressel
• Co-Applicant: Dr. Bojana Hamzic
• Subject Area: Experimental Condensed Matter Physics
• Term: from 2013 to 2017
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 204566485

Quantum critical points can occur at the edge of charge order. There quantum fluctuations associated with charge rather than magnetic order induce unconventional metallic properties. We want to investigate the transport properties, i.e. dc resistivity and Hall effect, of two-dimensional organic conductors in the vicinity of charge order to see how the coherence scale Tcoh characteristic of Fermi liquid behavior of the homogeneous metal vanishes at the onset of charge order. It is predicted that a strong effective mass enhancement reminiscent of heavy fermion behavior indicates the possible destruction of quasiparticles at the quantum-critical points.

• DFG Programme: Research Grants
• International Connection: Croatia